Secondary isolation separates the protection, control and metering circuits under test from the circuits that stay in service. This guide sets out the
Case Studies, Technical Guides & Industry Insights from Megavar's HV Engineering Team
Megavar’s engineering team shares practical insights from real HV commissioning projects, technical guides for substation testing, and case studies from BESS, solar farm, and wind farm commissioning work across Australia. Our content is written by practising engineers who use this equipment and perform these tests daily.
Power quality testing logs voltage and current at a point of connection for days and analyses the record for voltage, unbalance, harmonics, flicker,
Electrical thermal imaging finds connections, contacts and components running hotter than they should, on energised plant, without touching it. This guide explains what
SFRA testing sweeps a low-voltage signal from 20 Hz to 2 MHz through a transformer winding and records a trace that is a
Circuit breaker testing confirms a breaker opens and closes on command, fast enough and with its poles together. This guide explains timing, pole
CT testing proves that a current transformer has the ratio and polarity on its nameplate, a healthy magnetic core and sound secondary insulation.
Protection relay testing proves that the relays guarding a substation, feeder or generator will trip when they should and stay stable when they
Cable fault location finds the point where a power cable has failed so it can be repaired in one excavation. This guide explains
VT testing proves that a voltage transformer delivers a true, correctly phased image of the primary voltage and that its insulation and secondary